For some casting low-alloy steels,traditional quenching and tempering heat treatments can improve the strength;however,sometimes the ductility is not satisf ied
众所周知化工企业是一个特殊行业,有众多的特殊场所。化学物品具有爆炸、易燃、毒害、腐蚀、放射性等危险性质。在运输、装卸、生产、使用、储存、保管过程中,于一定条件下能
Semisolid rheoforming(SSR)is a promising technology for the production of Mg wrought alloy in foundry settings.In order to realize SSR,it is necessary to charac
我记得曾在写给市政府的报告中称,本省最大的煤盐一体化项目没能落户省城,而化工厂和化肥厂的搬迁工作却刻不容缓,一天也不能耽搁。怎样才能维持企业的生存和发展,如何才能保
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The hole defects can easily occur in magnesium alloy castings that are prepared by low pressure lost foam casting(LP-LFC)process when the process parameters suc
A type of mesh called a body-fi tted Cartesian mesh,very different from the traditional structured body-fi tted mesh,is established.At f irst,the right parallel